Shuttle-placer and thread-cutter for looms.



81F. McGUlNESS. ,SHUTTLE PLACER AND THREAD CUTTER FOR LOOM-S.

Patented Apr. 2, 1918;.

2 SHEETS-SHEET 1.

APPLICATION FILED AUG. 18. l9l6.

B. F. McGUINE SS.

SHUTTLE PLACER AND THREAD CUTTER FOR LOOMS. APPLICATION FILED AUG. 18. I916.

LQGLM'L I Patented .2,191&

, ZSHEET- BENJAMIN IF. MGGUINESS, OF SAUNDERSVILLE, MASSACHUSETTS, ASSIGNOR T CROMPTON & KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A.

CORPOTION OF MASSACHUSETTS.

SHUTTLE-PLACER THREAD-CUTTER FOR LOOMS;

To all whomz'tmay concern."

Be it known that I, BENJAMIN F. Mo-

GUINEss, a citizen of the" United States, residing at Saundersville, town of Grafton,

in the county of Worcester and State of Massachusetts, have invented a new and useful Shuttle-Placer and Thread-Gutter for Looms, of whichthe following is a such looms it is essential that the shuttle shall always occupy substantially the same position in the shuttle box at the time when a weft carrier is to be transferred in order that the fresh carrier may be accurately inserted in the shuttle jaws.

' Difierent arrangements have been prop'dse'd for securing this result. Man dif- .ferent forms of shuttle checks and binders have been pro osed for accomplishingthis purpose, but t ey .have not proved entlrely satisfactory, and have usually largely in-.

oom

creased the power required to run the If the pressure of the binder is reduced so as to permit a light pick it has been found impossible to stop the shuttle 1n the same position on every ick. It has also been proposed to provi e a shuttle placer for pushing the shuttle into the box to a definite position. Such placers have usually been actuated from the cam shaft, and have oper- 7 device or shuttle placer which shall be operative only after a transfer is indicated, and which shall then operate with great accu racy and certainty.

- -With this object in' view, I provide a shuttle-placer'which operates in conjunction with the transfer mechanism whereby when the transfer mechanismis actuated the shuttle placer is correspondinglv ren- "dered operative.

A further object of my invention is to provide an improved and'snn hfied thread cutter for use in conjunction wlth the shuttle Specification of Letters Patent.

Application filedhugust 18, 1916. Serial No. 115,608.

placer. In the preferred form this thread cutter is mounted .upon the shuttle placer and is movable therewith, the operative movement of the cutter being derived from the movement of the shuttle placer.

Another feature of my invention relates to the provision of improved devices for grippingand cutting the thread, and for thereafter slackening the thread prior to.

the operation of the temple thread cutter.

I further provide a combined shuttle placer and thread cutter which also acts in itself to revoke the transfer ,of the weft carrier if the shuttle stops so far out of the box that the shuttle placer cannot correct its position.

Further objects of my invention relate to certain arran ements and combinations of parts which w1ll be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of my invention is shown in the drawings in-which- Figure 1 is a front elevation of certain parts of a loom with my improved mechanism mounted thereon; V I

Fig. 2 is a side elevation of the mechanism shown in Fig. 1;

Fig. 3 is a detail plan view of the shuttle placerand its swivel support;

Fig. 4 isa perspective new of the shuttle placer with the thread cutter mounted" thereon, and I Fig. 5 'is' a detail sectional view of the ii h read cutter, taken along the line 5-5 in .1g. 2. 7 Referring to the drawingsl have shown a portion 'of the breast beam 10 of a loom having a. weft replenishing magazine 11 mounted thereon. The magazine is provided with. a transferrer arm 12 mounted upon a fixed pivot 13 and provided with a member l t-movable vertically into and out of the path of an actuator or hunter 15,

carried by the lay 15*. A shaft 16 is mounted inbearings on the end ofthe magazine, and .is provided with fingers 17 each ada ted to move a slide 18 vertically. Each sllde is provided with a pawl 19, which isadapted, in the position shown in Fig. 1', to engage an arm 20 secured to a shaft 21, and to 've said shaft'an angular movement as the slide descends. An arm 22 isalso fixed. to the shaft 21,

' and hasa slot and pin connection with a bell crank 23 which is connected "by a rod 24 to the member 14 pivoted on the transferrer arm. The shaft 21 is moved in the direction of the arrow a in Fig. 1, when. the substantial exhaustion of weft upon the active weft carrier is indicated and such movement will raise the member 14 to. oper ative position. I

All of the parts thus far described together with the mechanism, not Shown, for

actuating the shaft 16 are of the usual type, and form no part of my invention. For a complete description of this mechanism ref: erence is made to the patent to Ryon, No.

, 1,030,748, issued June 25, 1912.

improved shuttle placer comprises a cam plate 30 (Fig. 1) pivoted upon a" stud 31 (Fi 3) secured in a swivelhead 32 rotatab y mounted in a bracket 33 integral with or rigidly secured to the magazine 11.

A shuttle placer 34 is secured by a bolt and slot connection to the lower end of the cam plate 30 and the plate is also provided with an arm 35 which is yieldingly connected to an arm- 36 fixed to the shaft 21.

The yieldingconnection comprises a link 37 (Fi 2) pivoted to the arm 35;, and having a ateral projection 38 v (Fig. 1') at its upper end. A rod 39 extends through the projection 38, and isthreaded at its upper end into a head 40 pivoted to the arm 36.

A spring 41 surrounds the rod 39 and is held thereon by check' nuts 42 (Fig. 2). The parts 37 and 40 are thus yieldmgly secured together i'n-such a way that the arm 36 will act positively in the downward direction,

but yieldingly in the. opposite direction.

The cam plate 30 is provided with a cam slot 43 which is straight in its lower portion and sharply curved in its upper portion. A long cam roll 44 (Fig. 2) is mounted in bearings 45 upon the transferrer arm and extends through the slot 43.

The operation of the parts thus far described 1s as follows :-When the shaft .21 is turned, upon the indication of a'transfer, the arm 36 through the link 37 raises the arm 35 and thus. swingsthe shuttle positioner to the position shown indotted lines.

in Fig. 2. The flat side surface of the shuttle positioner is then adjacent the end of the shuttle. As the lay moves forward and manna (to the right in Fig. 2). This movement returns the shuttle placer and the shaft 21 to their original positions, thus resetting the mechanism. If, .however, the shuttle 1s so far out of the box that it cannot be positioned by the shuttle placer the side of the shuttle will'engage the placer 34 moving it to the right, and resetting the shaft 21, but this movement will take place before the engagement of the member 14 by the bunter 15 andthe transferwill be revoked. I thus utilize my shuttle positioning member as a resetting device, and also as a revoking device, without providing additional or separate devices for these necessary purposes.

' When the evice acts as a revoker it will be swung by the shuttle to an abnormal position to the right (Fig. 2) but such movement is permitted by compression of the spring 41 under theofiset portion 38 of the link 37.

In the preferred embodiment of my invention I combine with the shuttle lacer, above described, a new and improved ting device. This device comprises a corrugated gripping jaw 50 pivoted at 51 to the shuttle placer 34, a coiiperating corrugated grippin block 52 loosely mounted upon the shuttl fixed to the shuttle placer and a knife blade 54 pivoted at 51 and mounted to move with the pivoted jaw 50. The gripping block 52 is held in position by two studs 55 extending loosely throughholes in a flange 56 formed on the shuttle placer 34. Cross pins 57 limit the downward movement of the studs 55 and the block 52, and coil. springs 58 force the jaw yieldingly downward.

A link 60 (Figs. 1 and 2) is pivoted at its lower end to the jaw 50 and at its upper end is slidable in a swivel collar 61 pivoted at 62 to an arm 63 (Fig. 3) integral with the swivel stand 32. A collar 64 (Fig. 2) is fixed to the link 60 and engages the lower side of the collar 61, and a sprin 65 encircles the link above the collar 61 an is pressed against said collar by a collar 66 secured to the upper end of the link 60. As the shuttle placer swings to rearward or operative position the link 60 swings about the pivot 62. The resulting change in the relative position of the different centers opens the jaw 50, swinging it to the position shown in dotted lines in Fig. 2, in which position it is well adapted to engage and grip the outgoing weft... As the shuttle lacer is thereafter moved forward toward its original position the jaw is closed, gripping the thread against the upper block 52 and cutting the thread between the knives 53 and 54.

Asthe transferrer arm returns to its extreme raised position the shuttle placer and the thread cutter are swung to the leftJ-as viewed inFig. 1. This movement occurring after the severing of the thread slackens the thread cute placer 34, a knife blade 53 I acts also as a revoker. Having thus described my invention 1t neonate thread between the thread cutter and theand upon occasion the shuttle placer itself will be evident that changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope thereof as set forth in the cla1ms,.

and I do not, wish to be otherwise limited to the details herein disclosed. What I claimisz- 1. In a loom, in combination, a member efi'ective to operate both as a shuttle placer and as a shuttle feeler, means to move said member rearwardly across the path of the shuttle when a transfer is indicated, means to thereafter move said member to longitudinally position a misplaced shuttle, and

devices mounted on said member for gripping a .threadand for thereafter cutting the thread,said devices being actuated by the rearward and forward movement of said member.

2. In a loom,.a combined shuttle placer and feeler and athread cutter mounted thereon, said cutter comprising a pivoted corrugated gripping jaw, a spring-pressed corrugated gripping block cooperating therewith, a knifeblade fixed to said placer, and a second knife blade movable with said pivoted jaw.

3. In a loom, a magazine, transfer 1116011 placer an initial movement to operative position upon indication'of weft exhaustion,

4 and connections throu hwhich said transfer mechanism therea ter gives said placer an operative movement to positlon the shuttle before serted. I

' 4. In a loom, a magazme, transfer mechathe fresh weft carrier is in- .vlces e ective to move said mechanism and indepen ent of said nism therefor including a transferrer arm, weft controlled indicating mechanism for said magazine, a shuttle placer, connections controlled by said indicating mechanism and independent of said transfer mechanism effective to give said placer an initial movement to operative position upon indication of weft exhaustion, and connections through which said transfer mechanismthereafter gives said placer its full operative movement to position the shuttle during the initial downward movement of said transferrer arm. a

5. In a loom, a shuttle placer, devices operative with the weft replenishing mechanism for actuating said placer to position a misplaced shuttle, and a lay 'havin a portion positioned to engage said shutt e placer as the lay approaches its forward limit of movement and efiective to restore said shuttle placer to normal ino erative position after the shuttle is positloned thereby.

6.. In a loom,-a member efi'ective to act both as a shuttle placer and as a. shuttle feeler, means to normally hold said member but of the path of the shuttle, weft-controlled means. to move said member rearwardly into position to engage the end of said shuttle, means to thereafter give said member a movement alongthe path of said shuttle to positively force the shuttle into the shuttle box, and connections throu h which said member is operative to revo e' thetransfer upon engagement of said member with a misplaced shuttle.

7. In a loom, a shuttle placer normally held out of the path of the shuttle, a thread cutter mounted thereon comprising both grippin and cutting devices actuating deplacer rearwardly into position to engage the end of the shuttle and to thereafter move said placer longitudinally "to box the shuttle, means to close said gripping and cutting devices, successively, andmeans to move said placer forward to inoperative position,

said actuating devices thereafter moving" 'aflixed my signature.

BENJ ill F. Mc GSS. 

